The Suns have so many guys that can step up, the odds are always good we'll have at least one exceptional performance - even if that performance is mental and not a box sheet stuffing (i.e., Dudley Game 2).
Think about it; all of the following people are perfectly capable of getting serious points (20+) and 10 assists or 10 rebounds (and moreover have done it in the past):
30+ / 10+
Amar'e
Nash
Hill
Rich
25+ / 7+
Frye
Dudley
Barbosa
20+ / 7+
Dragic
RoLo
Lou has done (and could very well do) what Studley did in Game 2.
... and then there's Collins.
Basically, with the exception of Collins, the entire 10-player rotation has the ability to have game-changing "X-Factor" performances. And not just in the "the guy has potential", "
Marcus Banks' 23-point explosion" sort of way: these guys have done it before, this season, several times.
This is why a deep bench is so important. Everyone has ups and downs, a result of being human (and matchups and fatigue and so on), but having a 10-man rotation allows many more ups to compensate for the downs.